This column features all borosilicate glass construction with an 85 mL reservoir

·         The glass wool plug and PTFE tubing at the bottom of the column are held securely in place by a BEVEL-SEAL™ connection, facilitating easy cleaning and assembly

·         PTFE BEVEL-SEAL™ stopcock connector is included as a metering valve to control flow rate

·         Stopcock has a 821001-0002 plug (glass wool not included)

·         Ref: Method 4500-NO₃-E of the Standards Methods for the Examination of Water and Wastewater

·         Manufactured from 33 expansion, low extractable borosilicate glass conforming to USP Type I and ASTM E438, Type I, Class A requirements